Engine Swap

[7B7]

I am looking at getting a Chevelle that has a 350 in it, because I cannot find a one with a 454, or afford one right now. So, if I do get a Chevelle with a 350 in it, how difficult is it to eventually swap out the 350 for a 454?

[amac209]

should drop right in. you'll need different headers and bigger coils in the front. make sure the tranny and diff are strong before doing this

[DGB454]

I did it not all that long ago on mine. I blew up the first 454 that came in it and dropped a 350 in it. I am back to a 454 now. The swap was pretty easy. I think the only thing I bought that was different as far as being able to just bolt it up was motor mounts. I just bought those because the old ones were pretty ragged looking. Make sure when you do go to the 454 you get the right power steering brackets. There is a clearance problem if you don't.

[FortechMini11]

actually....if the car came with a small block, you have to swap out the front subframe for a big block one to withstand the extra weight and power difference, or you can beef up your current subframe so save more work

[406Elcamino]

Actually, the Chevelles don't have sub frames. They are a full frame car. There is no difference in the frames from a 6 cylinder car to a big block one. Just motor mounts and springs.